Tianwan NPP Unit 4 Enters Commercial Operations

Russian nuclear power giant Rosatom said in December that Unit 4 at the Tianwan NPP in China had begun commercial operations as of 22 December at 3:17 a.m. local time.

Tianwan NPP (Units 1 & 2)As such, Rosatom said, all tests for both TNPP Power Units 3 and 4 have been completed. The tests “proved the nuclear island complies with the technical specifications and safety requirements set forth in the (construction) Contract.”

Post testing, Rosatom anticipated the signing of a preliminary acceptance certificate for Unit 4 would be forthcoming. “based on the conducted tests in accordance with the General Contract … made between Atomstroyexport (part of Rosatom’s Engineering Division) as the Russian General Contractor and Jiangsu Nuclear Power Corporation.”

With the completion of tests and the start of commercial operations status, “this means that a two-year warranty period for the plant operation has commenced and, once expired, the Unit will be ultimately handed over to the Chinese Party,” to continue operations.

Rosatom noted the move to commercial power status occurred on Power Engineer Day in Russia. The move also implies that the Russian-built reactor has commenced supplying electricity to the national grid.

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